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1242080973 = 3478326393
BaseRepresentation
bin100101000001000…
…1010011011001101
310012120012020210000
41022002022123031
510020433042343
6323130034513
742531341220
oct11202123315
93176166700
101242080973
11588138901
122a7b78a39
1316a439273
14bad655b7
157409ded3
hex4a08a6cd

1242080973 has 40 divisors (see below), whose sum is σ = 2146148928. Its totient is φ = 701182656.

The previous prime is 1242080969. The next prime is 1242080989. The reversal of 1242080973 is 3790802421.

It is not a de Polignac number, because 1242080973 - 22 = 1242080969 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242080923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33865 + ... + 60257.

Almost surely, 21242080973 is an apocalyptic number.

It is an amenable number.

1242080973 is a deficient number, since it is larger than the sum of its proper divisors (904067955).

1242080973 is an equidigital number, since it uses as much as digits as its factorization.

1242080973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26495 (or 26486 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1242080973 is about 35243.1691679395. The cubic root of 1242080973 is about 1074.9377207114.

The spelling of 1242080973 in words is "one billion, two hundred forty-two million, eighty thousand, nine hundred seventy-three".

Divisors: 1 3 7 9 21 27 63 81 83 189 249 567 581 747 1743 2241 5229 6723 15687 26393 47061 79179 184751 237537 554253 712611 1662759 2137833 2190619 4988277 6571857 14964831 15334333 19715571 46002999 59146713 138008997 177440139 414026991 1242080973